Chicken sandwiches now appear on 47% of restaurant menus, while burgers are on only 41%|Thomas Hawk|CC BY-NC 2.0

Chicken sandwiches are gaining popularity thanks to Chick-fil-A, which started a fast-food battle over who serves the best poultry sandwiches.

The battle has become so popular that the dish has been eating into burger’s popularity. The phenomenon has every fast-food chain in America jumping on the trend and developing their own interpretation of the sandwich.

Dig, known for its bowl-based meals, has added a crispy chicken sandwich to its menu in response to customer demand for handheld options.

Shake Shack, McDonald’s and Wendy’s have introduced their variations as well.

An increasing number of sit-down restaurants also want a bite.

According to Bloomberg, chicken sandwiches now appear on 47% of restaurant menus, while burgers are on only 41%.

The fact that it is healthier than beef and cheaper adds to the dish’s rise.